✦ LIBER ✦

A model for fatigue crack closure

✍ Scribed by C.J. Beevers; K. Bell; R.L. Carlson; E.A. Starke

Publisher: Elsevier Science
Year: 1984
Tongue: English
Weight: 629 KB
Volume: 19
Category: Article
ISSN: 0013-7944
DOI: 10.1016/0013-7944(84)90071-7

No coin nor oath required. For personal study only.

✦ Synopsis

The phenomenon of fatigue crack closure has attracted continued interest over recent years. This paper concerns itself with one aspect of the phenomenon namely the effects of a single asperity on the crack face close to the crack tip and under dominantly plane strain Mode 1 loading conditions. The model as developed is two dimensional in character hut the nature of the closure processes allows it to be applied to real materials. The model illustrates the influence of asperity height, the distance from the crack tip of the asperity and rigidty of the asperity on the crack closure stress intensity. Application of the model to the case of microstructural asperities in nickel alloys and to oxide asperities in steels has met with reasonable success. vertical displacements IJ$local) w ' specimen width tJ polar co-ordinate angle Y Poisson's ratio o, yield stress

📜 SIMILAR VOLUMES

A multiple asperity fatigue crack closur

A multiple asperity fatigue crack closure model

✍ R.L. Carlson; C.J. Beevers 📂 Article 📅 1984 🏛 Elsevier Science 🌐 English ⚖ 353 KB

The plane strain, fatigue crack problem in which fracture surface asperities prevent closure is considered. A model in which closure contact can develop on a distribution of asperities is introduced. A comparison of closure behavior for one and for two asperities is made, and the effects of variatio

Modelling plasticity-induced fatigue cra

Modelling plasticity-induced fatigue crack closure

✍ J. Llorca; V. Sánchez Gálvez 📂 Article 📅 1990 🏛 Elsevier Science 🌐 English ⚖ 987 KB

A numerical analysis of plasticity-induced fatigue crack closure based upon the finite difference method is presented. This new method permits modelling easily fatigue crack growth as well as contacts between fracture faces, without requiring sophisticated algorithms. The model is applied to a wide

A model for crack closure

✍ D.L. Chen; B. Weiss; R. Stickler 📂 Article 📅 1996 🏛 Elsevier Science 🌐 English ⚖ 1014 KB

The current status of the knowledge about the fatigue crack closure effect is briefly reviewed. 494 D.L. CHEN et al. AK~ldconv) AK,~ Aa AO'~h 2 V ¢7 a,c,(6) O'closed {)'max O'mi n O~min,a¢l flop O'll conventional effective stress intensity range, Km,,~ -K,.r shielding stress intensity range externa

A model for fatigue crack propagation

✍ Stephen D. Antolovich; A. Saxena; Govind R. Chanani 📂 Article 📅 1975 🏛 Elsevier Science 🌐 English ⚖ 307 KB

Fatigue crack closure after overload

✍ D. Gan; J. Weertman 📂 Article 📅 1983 🏛 Elsevier Science 🌐 English ⚖ 786 KB

A study of crack closure in fatigue

✍ T.T. Shih; R.P. Wei 📂 Article 📅 1974 🏛 Elsevier Science 🌐 English ⚖ 991 KB